What first party Nintendo games for any system did you feel were not worth playing more than once, if at all?
They tend to have a great library so even the worst games are at least 'decent'.

I can say I honestly wasn't too flattered with Kirby's Air Ride. Such a long wait for a game that was mediocre at best.
I also don't care for any of the Mario Party series. That is one franchise Nintendo should give up entirely, if they haven't already.
Despite that recent thread bashing Super Mario Sunshine, I quite liked it. Not the killer app the Gamecube should've had, but I tend to enjoy most of the games in the Mario Bros. main series.